Detector and readout characterization for POLARBEAR-2b
Detector and readout characterization for POLARBEAR-2b
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POLARBEAR-2b 的探测器和读数表征
DOI：
10.1117/12.2562766
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发表时间：
2020
期刊：
影响因子：
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通讯作者：
Ito Jennifer et al.
中科院分区：
文献类型：
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作者：
大矢淳史;家城佳;大谷航;越智敦彦;Liang Haozhao;中野昇;Takahiro Nishinaka;干潟 紘太郎，森島 邦博，北川 暢子，西尾 晃，久野 光慧，眞部 祐太;Junya SUZUKI;Ito Jennifer et al.
西蒙斯阵列是一组位于智利北方阿塔卡马沙漠的三个毫米波长望远镜。它被设计用来测量由密度扰动、引力透镜和原始引力波引起的宇宙微波背景的偏振。Polarbear-2b（PB-2b）是将安装在保罗西蒙斯望远镜上的接收器，这是第二个西蒙斯阵列望远镜。PB-2b焦平面中的每个像素具有耦合到过渡边缘传感器（TES）测辐射热计的宽带弯曲天线。总共有7，500多个天线耦合TES测辐射热计，这些测辐射热计使用数字频域复用框架进行偏置和读取。我们实现了一个复用因子为40的谐振器频率范围从1.6 MHz到4.6 MHz。这些谐振器连接到超导量子干涉装置阵列，提供信号放大级。我们展示了Polarbear-2b探测器和实验室内测试的读出表征结果，这些结果使PB-2b于2020年3月部署到智利。
The Simons Array is a set of three millimeter-wavelength telescopes in the Atacama Desert in northern Chile. It is designed to measure the polarization of the cosmic microwave background caused by density perturbations, gravitational lensing, and primordial gravitational waves. Polarbear-2b (PB-2b) is the receiver that will be mounted onto the Paul Simons Telescope, the second Simons Array telescope. Each pixel in the PB-2b focal plane has a broadband sinuous antenna coupled to transition-edge sensor (TES) bolometers. In all, there are more than 7,500 antenna-coupled TES bolometers which are biased and read out using a digital frequency-domain multiplexing framework. We implement a multiplexing factor of 40 with resonator frequencies ranging from 1.6 MHz to 4.6 MHz. These resonators are connected to superconducting quantum interference device arrays that provide a signal amplification stage. We present Polarbear-2b detector and readout characterization results from in-lab testing that enabled the deployment of PB-2b to Chile in March 2020.